Národní úložiště šedé literatury Nalezeno 6 záznamů.  Hledání trvalo 0.00 vteřin. 
Role of microscopic morphology in electrostatic charging of nanocrystalline diamond
Verveniotis, Elisseos ; Kromka, Alexander ; Rezek, Bohuslav
Self assembly of nanoparticles on NCD possible. Films macroscopically homogenous (SEM, Raman), however microsopic structural variations (SEM cross sections) do exist. Detailed KFM and CS-AFM measurements indicate that charge is mostly confined in the inter-grain space.
Renewal of three-dimensional nanocrystalline diamond bio-transistor by low temperature hydrogenation
Krátká, Marie ; Neykova, Neda ; Ukraintsev, Egor ; Kromka, Alexander ; Rezek, Bohuslav
We employ directly grown microscopic (20um and 5um) solution-gated field-effect transistors (SGFET) as a biosensor with H-terminated surface acting as a gate insulator towards solution and generator of surface conductivity at the same time.
Electrostatic assembly of alumina nanoparticles on nanocrystalline diamond films
Verveniotis, Elisseos ; Kromka, Alexander ; Rezek, Bohuslav
We apply atomic force microscope for local electrostatic charging of oxygen-terminated nanocrystalline diamond (NCD) thin films deposited on silicon, to induce electrostatically driven self-assembly of colloidal alumina nanoparticles into micro-patterns. The NCD films have sub-100 nm thickness and 60% relative sp2 phase content. We characterize charge contrast and stability in air, fluorocarbon oil and water by Kelvin force microscopy. We discuss factors influencing the charging process and demonstrate that the contrast of more than ± 1 V is needed to induce selfassembly of the nanoparticles via coulombic and polarization forces.
Characteristics of nanocrystalline diamond SGFETs under cell culture conditions
Krátká, Marie ; Kromka, Alexander ; Rezek, Bohuslav ; Brož, A. ; Kalbáčová, M.
Characterization of electronic properties of protein diamond interface by using microscopic (20 μm) solution-gated field-effect transistors (SGFET) based on H-terminated nanocrystalline diamond films (NCD) on glass. We show that NCD films with grain sizes down to 80 nm and thickness down to 100 nm are operational as SGFETs.
Plošný přenos náboje na rozhraní polypyrol-diamant
Čermák, Jan ; Rezek, Bohuslav ; Hubík, Pavel ; Mareš, Jiří J. ; Kromka, Alexander ; Fejfar, Antonín
V této práci jsme zkoumali plošný přenos náboje na rozhraní polypyrol-diamant.
Lokální elektrostatické nabíjení polovodičových tenkých vrstev
Verveniotis, Elisseos ; Čermák, Jan ; Kromka, Alexander ; Rezek, Bohuslav
V této práci jsme zkoumali lokální elektrostatické nabíjení polovodičových tenkých vrstev.

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